Printing-element holder



H. S. WARNOCK. 4

PRINTING ELEMENT HOLDER.

APPLICATION msn Noms. 1921.

1,418,112'. Patented May 30,1922.

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H. s. wARNocK.

IIIIIIIII LEMENT HOLDER.

Patented May 30, 1922.

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Hnnaiorr s. wA'Rivocii, or` cnicaeo, Inninois.

.'PRINTING-ELEMENT HOLDER.

To @ZZ whomz' may concern.' 1

Be it known that I, Hnnnio'r'r S. vWAR- Nooi, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement' in Printing- Element Holders, of which the following is a full, clear,- concise, and exact description.

My invention `*relates to printing element holders, commonly Vtermed printing plate holders, and has for one of its objects thev provision of improved mechanism entering into the construction of the holder so that the holdingjaw thereof may readily be applied to a plate or other printing element to be clamped thereby.

In practicing this feature4 of my invention I employ a hollowcarrier, a clamping jaw upon 'the carrier andliaving a stem within and in pivotal connection with the carrier, and mechanism serving to turn the jaw and having complemental elements preferably in sliding engagement, one of these elements being upon the carrier and the other assembled with the clamping jaw. In the preferredembodiment of the invention there is a screw assembled with the j aw and extending along the stem of the jaw, the

.jaw having an opening in line with' the screw to afford access to the screw, and anut upon the screw, lthe carrier having` inclined opposite slots between which the nut is disposed and in which the nut has engagement with the carrier.

The invention has for another of its objects' the provision of im'provedmeans for assemblinothe cairier with a printing foundation. Ian carrying out this object lof my invention there-is 'a clamping j aw upon the carrier, a retaining member assembled with the carrier and movable transversely thereof into and out of engagement with the foundation,and an actuating element mov; able transversely of the foundation, the retaining member and actuating element having engaging portions Athat have relative movement in an inclined direction to eect movement of the retaining member into and out of engagement with the foundation.

I will explain my invention more fully by reference to the` accompanying' drawings showing the preferred embodiment thereof and in which Fig. 1 is a vertical sectional view on a larger scale of a printing plate holder constructed in accordance with the invention and a portion of the printing plate Specification of Letters Patent. Patented luay 30 1922. Application filed November 3, 1921. Serial No. 512,415. t

ing a portion of a section of a printing plate I foundation with a Vprinting plate holder of my invention assembled therewith; Fig. 6

is a View showing parts of the printing plate holder in separated relation; Fig. 7 illustratesother parts of the printing plate holder in separated relation; and Fig. 8 illustrates an adjusting' tool for eii'ecting the assembly and separation of the printing plate holder and printingfoundation.

Like parts areindicated by similar characters of reference throughout the diii'erent figures. c

The printing bed or foundation may be of anysuitable shape, the drawings showing a section l 'of afflat bed, a number of sections suitablyl assembled forming the bed. Each of these sectionsor blocks is formed with a pluralityv of cylindrical holes 2, in the construction ofthe bed section `illustrated,al

thoughit is to be understood that the i'nl vention is not to be limited to any particulary form of'bed not toi the shape ofI the holes 2.

therein As illustrated, each `hole is provided with an annular enlargement 3 below the work supporting face of the bed whereby i there is provided in each hole an annular retaining shoulder 4. Carriers 5 are used in suiiicient number to hold the printing plate upon-the bed these carrierssupporting the work engaging mechanism that is to be-described. The carriers are shown as being formed of two parts of U-form, one part being interposed between the sides of the other' and the bases of both parts -beingcylindrically curved. Thesef-U-shaped parts are preferably assembled in part by rivets 5 and in part by an elementl of the mechanism that will later be described'.- The carriers are snugly received within the holeszwithin which they are rotatable in order that the work engaging mechanismy may be posi- 9 that is carried by the upright wings 1G of a retaining member 11. Said wings 10 are formed with horizontal elongated slots or openings 12 through which the rod 18, that i arepositioned to receive the pin 9. Said pm, being' fixed upon the wings '10 and virzio it to clear the bed.

thus positioned the actuating element is detually constituting apart of the retaining member, will force the inward movement of thesey wings as the pin is broughtv to the lower ends of theslots 8 whereby the retaining member is withdrawn sufficiently into the carrier '5 to permit of the insertion and removal of the same. .lhen the carrier is to be assembled with the printing plate foundation it is lowered to a position yin which the plane of the retaining member 1-1 is below the shoulder 4, the actuating element 6 being then withdrawn to its uppermost position to withdraw the retaining member suiiiciently into the shell to permit When the retainerV is pressed tocausethe upper ends oj the yslots 8 to receive the pin 9 in vwhich operation the wings 10 are moved outwardly to thrust the retaining member 11 beneath thel retaining shoulder 1 upon the bed. Then the partsarer thus assembled the plate holdingmechanism, now to be described, may be suitably adjusted This 4platelholding mechanism is inclusive of a clamping jaw 15 upon the carrier 5 and having a biturcated stem 16 within 'and iu pivotal connection with the carrier, the stem desirably being pin pivotal or rotative conitself 'is journaled upon the horizontal rod nection with the rod 13 that is surrounded by the lower1 end of the stem. A screw 17 extends along the stem of the jaw transversely of the printing foundation. It is iournaled at its lower end in a bloclr18 that 13,. :The upper end of the screw carries an element' 19v that is polygonal in contour, this portion of the vscrew passing through an opening l20 in` line with the screw and through which opening the portion 19 ofthe screw may be engaged by the upper (key) end ofthe adjusting tool shown in Fig'S. A nut' 21 is upon the screw, thisnut having 'lateral extensions 22 that are receivable within the inclined opposite slots 28 between which the nut is disposed and in which the nut has sliding engagement with the carmoved bthe inclined slots 23 serve to confine itl to an inclined direction of movement Lwhich causes movement of the jaw 15 along the foundation to anextent proportional to the movement ot the nut along` the screw. The nut is also iiattened at the j aw stem 16 to supplement the action of the slots 28 and the nut projections 22 in preventing the nut from turning. As the nut is moved longitudinally of the shaft without turning, the mounting 18 for the screw 17 turns upon the rodv 18 in company with the stem of the j aw.

llVhile I have herein shown and particularly described the preferredy embodiment ot my invention I dol not wish to be limited to the precise details oit construction shown aschanges may readily be made without departing romthe spirit of my invention'. but having thus described my'invention I claim as new and ,desire to secure by Letters Patent the following f 1. A printing element holder includinga hollow carrier; a clamping jaw upon the carrier and having a stem `within and in pivotal connectionv with the carrier;` and mechanism serving to turn the jaw and having complemental elements in sliding engagement, one of these elementsbeing upon the carrier andthe other assembled with the clamping jaw.

2. A printing elementholder including a hollow carrier; a clamping jaw upon the carrier and having aA stem within and in pivotal connection with the carrier; and mechanismf serving to tur-n the jaw andk having complemental elements in. sliding engagement, one of these elementsrbeing upon the carrier and the other assembled with the clamping jaw, the path of relative .movement of said complemental elements Vbeing inclined.

3. A printing element holder including a hollow carrier; a'clamping jaw vupon the, carrier and having a stem within and in pivotal connection with the carrier; a screw assembled with the aw and extending along the stem of the jaw; and a nut 'upon the screw that is in sliding engagement with an inclined portion upon the carrier.

1. A printing element holder including a carrier and having a stem within and in pivotal connection with the carrier; a screw assembled with lthe jaw;r and a nut upon i the screw vthat is in sliding engagement with an inclined portion upon the carrier.'-

5.v A printing element holder including a hollow carrier; aY clampingl jaw upon the carrier and having a stem within and in pivotal connection withthe carrier; a screw hollow carrier; a clamping jaw upon the 'y assembled with the jaw and extending along the stem of thej aw, thejaw having an opening in line with the screw to afford access to the screw; and a nut upon the screw that is in sliding engagement with an inclined portion upon the carrier.

6. A printing element holder including a hollow carrier; a clamping jaw upon the carrier and having a stem within and in pivotal connection with the carrier; a screw assembled with the jaw; and a nut upon the screw, the carrier having inclined opposite slots between which the nut is disposed and in which the nut has engagement with the carrier.

7. A printing element holder including a hollow carrier; a clamping jaw upon the carrier and having a stem within and in pivotal connection with the carrier; a screw assembled with the jaw and extending along the stem of the jaw; and a nut upon the screw, the carrier having inclined opposite slots between which the nut is disposed and in which the nut has engagement with the carrier.

8. A printing element holder including a hollow carrier; a clamping jaw upon the carrier and having a stem within and in pivotal connection with the carrier; a screw assembled with the jaw and extending along the stem of the jaw, the jaw having an opening in line with the screw to afford access to the screil'; and a nut upon the screw, the carrier having inclined opposite slots be-l tween which the nut is disposed and in which the nut has engagement with the carrier.

9. The combination with a foundation; of a carrier, said foundation being' formed to receive said carrier; a clamping jaw upon the carrier; a retaining member assembled with the carrier and movable transversely7 thereof into and out of engagement with said foundation; and an actuating element movable transversely of the foundation, said retaining member and actuating element having engaging portions that have relative movement in an inclined direction to effect movement of the retaining member into and out of engagement with the foundation.

10. The combination with a foundation; of a carrier, said foundation being formed to receive said carrier; a clamping jaw upon the carrier; a retaining member assembled with the carrier and movable transversely thereof into and out of engagement with said foundation; and an actuating element movablev transversely of the foundation, said actuating element having an inclined slot, and said-retaining member having a portion entering said slot, whereby upon operation of the actuating element the retaining member is moved into or out of engagement with the foundation.

1l. The combination with a foundation; of

a carrier, said foundation being formed toV receive said carrier; a clamping jaw upon the carrier; a retaining member assembled with the carrier and movable transversely thereof into and out of engagement with said foundation; and an actuating element movable transversely of the foundation, said actuating element having two wings between which the retaining member is disposed,A

said wings having inclined slots in which portions of the retaining member are received, whereby upon operation of the actuating element the retaining member is moved into or out of engagement with the foundation.

12. A printing plate holder including a hollow carrier; a clamping jaw upon the carrier and having a stem within and in pivotal connection with the carrier; and mechanism serving to turn the jaw, this mechanism having complemental elements that have relative movement in an inclined direction to effect turning movements of the jaw.

In witness whereof, I hereunto subscribe my name this 25th day of October A.'D.,

HERRIOTT S. WARNOCK. 

